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參數(shù)資料
| 型號： | MIC2544 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Programmable Current Limit High-Side Switch(可編程 限流高邊開關(guān)) |
| 中文描述： | 可編程電流限制高邊開關(guān)（可編程限流高邊開關(guān)） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 108K |
| 代理商： | MIC2544 |
June 2000
1
MIC2544/2548
MIC2544/2548
Micrel
MIC2544/2548
Programmable Current Limit High-Side Switch
Preliminary Information
General Description
The MIC2544 and MIC2548 are integrated high-side power
switches optimized for low loss dc power switching and other
power management applications, including Advanced Con-
figuration and Power Interface (ACPI). The MIC2544/48 is a
cost-effective, highly integrated solution that requires few
external components to satisfy USB and ACPI requirements.
Load current management features include a precision resis-
tor-programmable output current-limit and a soft-start circuit
which minimizes inrush current when the switch is enabled.
Thermal shutdown, along with current-limit, protects the
switch and the attached device.
The MIC2544/48’s open-drain flag output is used to indicate
current-limiting or thermal shutdown to a local controller. The
MIC2548 has an additional internal latch which turns the
output off upon thermal shutdown providing robust fault
control. The enable signal is compatible with both 3V and 5V
logic, and is also used as the thermal shutdown latch reset for
the MIC2548.
The MIC2544 and MIC2548 are available in active-high and
active-low enable versions in the 8-pin SOP (small-outline
package) and 8-pin MSOP (micro-small-outline package).
Typical Application
EN
FLG
GND
ILIM
OUT
IN
OUT
NC
MIC2544-xBM
On/Off
Peripheral
0.1μF
R
SET
+5V
R
FLG
33μF
SOP pinout shown
Typical Advanced Configuration and Power Interface (ACPI) Application
Features
2.7V to 5.5V input
Adjustable current-limit up to 1.5A
Reverse current flow blocking (no
“
body diode
”
)
75
μ
A typical on-state supply current
1
μ
A typical off-state supply current
120m
maximum on-resistance
Open-drain fault flag
Thermal shutdown
Thermal shutdown output latch (MIC2548)
2ms (slow) turn-on and fast turnoff
Available with active-high or active-low enable
Applications
USB power distribution
PCI Bus Power Switching
Notebook PC
ACPI power distribution
PC card hot swap applications
Inrush current-limiting
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC2548 | Programmable Current Limit High-Side Switch(可編程 限流高邊開關(guān)) |
| MIC2546 | Dual Programmable Current Limit Switch(雙可編程限流電源高邊開關(guān)) |
| MIC2547 | Dual Programmable Current Limit Switch(雙可編程限流電源高邊開關(guān)) |
| MIC2546-1BM | Dual Programmable Current Limit Switch Preliminary Information |
| MIC2546-1BTS | Replaced by PT6527 : |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2544-1BM | 功能描述:IC SW CURR LIMIT HI SIDE 8-SOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 內(nèi)部開關(guān) 系列:- 標準包裝:1 系列:- 類型:高端 輸入類型:非反相 輸出數(shù):1 導通狀態(tài)電阻:85 毫歐 電流 - 輸出 / 通道:2A 電流 - 峰值輸出:6A 電源電壓:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-UFDFN 裸露焊盤，4-TMLF? 供應商設備封裝:4-TMLF?（1.2x1.6） 包裝:剪切帶 (CT) 其它名稱:576-1574-1 |
| MIC2544-1BM TR | 功能描述:IC SW CURR LIMIT HI SIDE 8-SOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 內(nèi)部開關(guān) 系列:- 標準包裝:1 系列:- 類型:高端 輸入類型:非反相 輸出數(shù):1 導通狀態(tài)電阻:85 毫歐 電流 - 輸出 / 通道:2A 電流 - 峰值輸出:6A 電源電壓:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-UFDFN 裸露焊盤，4-TMLF? 供應商設備封裝:4-TMLF?（1.2x1.6） 包裝:剪切帶 (CT) 其它名稱:576-1574-1 |
| MIC25441BMM | 制造商:Micrel Inc 功能描述: |
| MIC2544-1BMM | 功能描述:IC SW CURR LIMIT HI SIDE 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 內(nèi)部開關(guān) 系列:- 標準包裝:1 系列:- 類型:高端 輸入類型:非反相 輸出數(shù):1 導通狀態(tài)電阻:85 毫歐 電流 - 輸出 / 通道:2A 電流 - 峰值輸出:6A 電源電壓:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-UFDFN 裸露焊盤，4-TMLF? 供應商設備封裝:4-TMLF?（1.2x1.6） 包裝:剪切帶 (CT) 其它名稱:576-1574-1 |
| MIC2544-1BMM TR | 功能描述:IC SW CURR LIMIT HI SIDE 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動器 - 內(nèi)部開關(guān) 系列:- 標準包裝:1 系列:- 類型:高端 輸入類型:非反相 輸出數(shù):1 導通狀態(tài)電阻:85 毫歐 電流 - 輸出 / 通道:2A 電流 - 峰值輸出:6A 電源電壓:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:4-UFDFN 裸露焊盤，4-TMLF? 供應商設備封裝:4-TMLF?（1.2x1.6） 包裝:剪切帶 (CT) 其它名稱:576-1574-1 |
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